From: Eli Zaretskii <eliz@gnu.org>
Date: Fri, 8 Dec 2006 18:05:12 +0000 (+0000)
Subject: (insert-file-1): Compare file size to large-file-warning-threshold and request
X-Git-Tag: emacs-pretest-22.0.92~231
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=1dd46c28628ccb093b972bfba50ed16f5c8deedb;p=emacs.git

(insert-file-1): Compare file size to large-file-warning-threshold and request
confirmation when warranted.
---

diff --git a/lisp/files.el b/lisp/files.el
index 396e4c28b36..186dd8f3a0d 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -1695,6 +1695,16 @@ This function ensures that none of these modifications will take place."
   (if (file-directory-p filename)
       (signal 'file-error (list "Opening input file" "file is a directory"
                                 filename)))
+  ;; Check whether the file is uncommonly large (see find-file-noselect):
+  (let (size)
+    (when (and large-file-warning-threshold
+	       (setq size (nth 7 (file-attributes filename)))
+	       (> size large-file-warning-threshold)
+	       (not (y-or-n-p
+		     (format "File %s is large (%dMB), really insert? "
+			     (file-name-nondirectory filename)
+			     (/ size 1048576)))))
+      (error "Aborted")))
   (let* ((buffer (find-buffer-visiting (abbreviate-file-name (file-truename filename))
                                        #'buffer-modified-p))
          (tem (funcall insert-func filename)))